Home Improvement

What is AV belt on a lawn mower?

One belt connects the transmission of the lawn tractor to the driveshaft pulley and the other belt connects the mower deck to the driveshaft pulley. Both belts, usually made of Kevlar and of a V-groove construction, vary greatly in length on just about every make and model.

How do I know if my V belt is worn out?

A correctly fitting V belt should slightly extend out of the pulley groove. If it extends out too high the belt may wear below the cord member. When a V belt rides below the edge of the groove this is usually a sign of a worn belt, worn pulley, or an incorrectly sized belt.

What is the V belt on a lawn mower?

The V belt found on your tractor is specially designed to engage and disengage safely. A substitute, or NON-Original Equipment Manufacturer (OEM), V-belt can be dangerous as it may not disengage completely. For a proper working machine, always use factory approved lawn mower belts.

What’s the difference between a drive belt and AV belt?

Flat and V-belt drives are fundamentally different systems. The V-belt drive technology is based on the belt tracking in a mating groove in the belt pulley. The more power that is transmitted, the more belts and grooves in a row.

How often replace mower deck belt?

Under ideal conditions, a mower drive belt will last between three to four years. If you use the mower quite a bit or if you do not take good care of the machine, it may wear out sooner. Wear and tear often makes it hard to keep the mower belt going for longer than four years.

Do you have to remove mower deck to replace belt?

To replace this belt, the deck should be off the lawn mower. You’ll crawl underneath and locate the idler pulley(s) and loosen the cap screw at the center of the pulley to allow a wiggling movement in the pulley.

Why does my drive belt keep coming off my riding mower?

A riding mower belt can come off your mower when brackets, belt keepers or idler spring are worn or damaged; your bearings are bad in your pulleys or spindle housings; or debris is interfering with the tension of your deck belt.

How do I know if my mower deck belt is bad?

Indicators that Your Lawn Mower Deck Belt is Loose

  1. Belt is Slipping. If the deck belt on your lawn mower is loose, it’s possible that it may start to slip. …
  2. Excessive Deck Vibration. …
  3. High Pitch Noise. …
  4. Faster Wearing on Sides. …
  5. Comes Off the Pulleys.


Why do lawn mower belts break?

If your lawn mower belt keeps breaking it could be due to a number of factors including the quality of the belt itself, damaged pulley bearings, rust or sharp edges on pulley grooves, debris building up inside pulley grooves or a weak tensioner spring.

How do I know when to replace my mower belt?

The belt has a glazed or bu​rned sidewall.



Look at the belt edge that contacts the pulleys. If it appears shiny, glazed or burned, it will need to be replaced.

Can you fix a broken lawn mower belt?

We can repair broken lawn mower belts faster than if you took your mower into a regular repair shop! There are many things you can do to ensure that your lawn mower is running properly. Replacing belts on your lawn mower will keep your lawn mower drive system operating at optimal speed.

How do you change a riding lawn mower belt?

By moving the deck lift lever remove the belt guards by removing the screws that secure them to the deck remove the belt keeper rod from around the engine. Pulley. On a deck. Like this one loosen.

How tight should my mower deck belt be?

As a general rule, the belt should be tight enough that you can’t twist it more than a quarter turn. too loose, and the belt will slip; too tight, and you’ll wear out the bearings on the mower deck. However The drive belt should be tight enough to prevent slippage without causing the mower to vibrate excessively.

How do you adjust the belt tension on a riding lawn mower?

Now you take your ten millimeter wrench you loosen those bolts off. And you pull that bracket away from the spring pretty much towards you pull it back all the way. And tighten those bolts back. Up.

How do I stop my lawn mower belt from slipping?

Out well this is a new belt still wanted to slip. So you got spring spring hooks in here and go um up ring looks good but when you pull the pedal back it'll.

How do you tighten a self propelled lawn mower belt?

The traction adjustment knob by turning it counterclockwise to increase traction pull the cable down toward the engine to decrease traction pull the cable up toward the handle.

Why does my belt keep slipping off?

Slipping can be the result of a loss of belt tension (or a weak automatic tensioner) or pulley misalignment. When the belt slips off the track, the friction between the belt and accessory drive pulleys causes the belt to overheat. If you hear a high pitched squealing noise, it’s probably time for a switch.

How do you tighten the belt on a Craftsman lawn mower?

How to tighten the drive belt on a craftsman lawnmower, step by…

  1. Step 1: Gather the necessary tools and remove the spark plug.
  2. Position your lawnmower on a leveled surface.
  3. Step 3: Remove the mower deck.
  4. Step 4: Tighten the belt bracket.
  5. Step 5: Tighten all pulley connections.
  6. Step 6: Double-check the blades.


Can you adjust the drive belt on a Craftsman riding mower?

Blade drive belts on Craftsman lawn mowers are not designed to be be adjusted and there is no mechanism for adjusting them. Instead, the manufacturer recommends replacing a loose belt with a new one.

How long is the drive belt on a Craftsman riding mower?

Drive Belt



Craftsman mowers have primary and secondary drive belts. Both belts range between 42 to 50 inches long, depending on the mower’s model. Craftsman’s riding and push mowers use drive belts.

What size belt goes on a Craftsman 42 inch deck?

AYP / Craftsman / Sears 42″ Deck Belt No.



Size: 1/2 x 105-1/8.

Are all 42 inch mower belts the same?

There’s no standard size for a 42-inch-cut riding mower. Each model uses a different size belt. To give examples, some models use a drive belt that is ½ inch wide by 92 inches in length, while others use a belt ½ inch wide by 85 inches in length.

How do you determine your belt size?

The general rule for measuring a man’s belt size is to take your pant size and add 2 inches. For example, if you wear a size 34 pant, we recommend a size 36 belt. You can also use a tape measure where you will be wearing your belt, that number is where the center hole of the belt will fit.

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